Former Democratic aide pleads guilty to doxing GOP senators attending Kavanaugh hearing

A former congressional Democratic staff member pleaded guilty on Friday to posting private information about Republican senators who took part in the hearings on sexual assault allegations against then-Supreme Court nominee Brett KavanaughBrett Michael KavanaughCory Booker has a problem in 2020: Kamala Harris McGahn's lawyer pushes back after Giuliani knocks his credibility Grassroots America shows the people support Donald Trump MORE.

Jackson Cosko, 27, pleaded guilty to two counts of making public restricted personal information and one count each of computer fraud, witness tampering and obstruction of justice, The Washington Post reported.

The five federal felony counts carry maximum penalties up to 20 years in prison. In accordance with a plea agreement, prosecutors said a sentencing range of 46 to 57 months applied under federal guidelines.

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Cosko, who has served about four months in jail since he was charged, will be sentenced on June 13, the newspaper noted.

The agreement comes after Cosko was accused of releasing the private information of five Republican senators last year.

Cosko was reportedly upset after he had been fired from the office of Sen. Maggie HassanMargaret (Maggie) HassanOvernight Health Care: CEO of largest private health insurer slams 'Medicare for All' plans | Dem bill targets youth tobacco use | CVS fined over fake painkiller prescriptions | Trump, first lady to discuss opioid crisis at summit GOP senators divided on Trump trade pushback Former Democratic aide pleads guilty to doxing GOP senators attending Kavanaugh hearing MORE (D-N.H.) in May. He said in court filings that he had "engaged in an extraordinarily extensive data theft scheme" by burglarizing the office several times after his ouster to steal sensitive information he could use later.

According to the Post, Cosko said he "became angry" on Sept. 27 as he watched Kavanaugh, President TrumpDonald John TrumpThorny part of obstruction of justice is proving intent, that's a job for Congress Obama condemns attacks in Sri Lanka as 'an attack on humanity' Schiff rips Conway's 'display of alternative facts' on Russian election interference MORE’s then-Supreme Court nominee, testify before the Senate Judiciary Committee. Kavanaugh's hearing came after he was accused of sexual assault by Christine Blasey Ford.

Ford testified before the Senate panel in late September that she had been assaulted by Kavanaugh when they were in high school in the 1980s. He vehemently denied Ford's and two other women's allegations in his own subsequent hearing.

Cosko admitted to the court that he responded to the contentious hearings by anonymously editing the Wikipedia pages of five Republican senators to add their phone numbers and home addresses, according to the Post.

The information was quickly removed when it was discovered, and aides contacted authorities.

Cosko said the group included GOP Senate Judiciary Committee members Lindsey GrahamLindsey Olin GrahamHillicon Valley: House Dems subpoena full Mueller report | DOJ pushes back at 'premature' subpoena | Dems reject offer to view report with fewer redactions | Trump camp runs Facebook ads about Mueller report | Uber gets B for self-driving cars DOJ: Dem subpoena for Mueller report is 'premature and unnecessary' Dems reject Barr's offer to view Mueller report with fewer redactions MORE (S.C.), Mike LeeMichael (Mike) Shumway LeeDems sound alarm over top DOJ nominee Restore Pell Grant eligibility to people in prison Former Democratic aide pleads guilty to doxing GOP senators attending Kavanaugh hearing MORE (Utah) and Orrin HatchOrrin Grant HatchHatch warns 'dangerous' idea of court packing could hurt religious liberty Former Democratic aide pleads guilty to doxing GOP senators attending Kavanaugh hearing How do we prevent viral live streaming of New Zealand-style violence? MORE (Utah) as well as Sen. Rand PaulRandal (Rand) Howard PaulBooker, Harris have missed most Senate votes Trump vetoes measure ending US support for Saudi-led war in Yemen Bottom line MORE (R-Ky.) and Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellSenate Republicans tested on Trump support after Mueller Anti-smoking advocates question industry motives for backing higher purchasing age Former Bush assistant: Mueller report makes Obama look 'just plain bad' MORE (R-Ky.).

Cosko was caught sneaking into Hassan’s office after 10 p.m.  to log on to an aide’s computer. He was recognized by another staffer and ordered to leave, according to court papers.

The other aide then received a threatening email minutes later with the subject line "I own Everything." The message reportedly stated, "If you tell anyone I will leak it all. Emails signal conversations gmails. Senators children’s health information and socials," according to plea papers reviewed by the Post.

Cosko was arrested on Oct. 3.